CN109974095B - Air conditioner indoor unit, air conditioner and control method of air conditioner - Google Patents
Air conditioner indoor unit, air conditioner and control method of air conditioner Download PDFInfo
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- CN109974095B CN109974095B CN201910253210.4A CN201910253210A CN109974095B CN 109974095 B CN109974095 B CN 109974095B CN 201910253210 A CN201910253210 A CN 201910253210A CN 109974095 B CN109974095 B CN 109974095B
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- guide ring
- indoor unit
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000004378 air conditioning Methods 0.000 claims description 12
- 238000004891 communication Methods 0.000 claims description 7
- 230000037237 body shape Effects 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000001816 cooling Methods 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
- F24F1/0033—Indoor units, e.g. fan coil units characterised by fans having two or more fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2120/00—Control inputs relating to users or occupants
- F24F2120/20—Feedback from users
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- Air-Flow Control Members (AREA)
- Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
Abstract
The invention discloses an air conditioner indoor unit, an air conditioner and a control method thereof, wherein the air conditioner indoor unit comprises: the shell is provided with an air inlet and an air outlet, a normal-temperature air channel, a heat exchange air channel and a mixing air cavity are formed in the shell, the mixing air cavity is connected with the air outlet, an inlet of the normal-temperature air channel is connected with the air inlet and an outlet of the normal-temperature air channel is communicated with the mixing air cavity, and an inlet of the heat exchange air channel is connected with the air inlet and an outlet of the heat exchange air channel is communicated with the mixing air cavity; the heat exchanger is arranged in the heat exchange air duct; the first wind wheel assembly is arranged in the normal-temperature air duct and comprises a first wind wheel, and the first wind wheel is used for driving airflow in the normal-temperature air duct to flow to the air mixing cavity; the second wind wheel assembly is arranged in the heat exchange air duct and comprises a second wind wheel, and the second wind wheel is used for driving airflow in the heat exchange air duct to flow to the air mixing cavity. According to the air conditioner indoor unit provided by the invention, the air cooling heat blown out from the air outlet can be uniform, and the blown air is cool and not cool.
Description
Technical Field
The present invention relates to the field of air conditioning technologies, and in particular, to an air conditioner indoor unit, an air conditioner, and a control method thereof.
Background
In the air conditioner in the related art, cold air after heat exchange by the evaporator is directly blown out, and the cold air can play a role of circulating air flow, but the circulating cold air can bring supercooling discomfort and influence comfort.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. The present invention is directed to an air conditioning indoor unit that mixes cool air with natural air to cool the blown air.
The second aspect of the invention provides an air conditioner with the air conditioner indoor unit.
A third aspect of the present invention provides a control method of the air conditioner.
A fourth aspect of the present invention is to provide a control method of the air conditioner.
An air conditioning indoor unit according to a first aspect of the present invention includes: the air conditioner comprises a shell, wherein an air inlet and an air outlet are formed in the shell, a normal-temperature air channel, a heat exchange air channel and an air mixing cavity are formed in the shell, the air mixing cavity is connected with the air outlet, an inlet of the normal-temperature air channel is connected with the air inlet, an outlet of the normal-temperature air channel is communicated with the air mixing cavity, and an inlet of the heat exchange air channel is connected with the air inlet, and an outlet of the heat exchange air channel is communicated with the air mixing cavity; the heat exchanger is arranged in the heat exchange air duct; the first wind wheel assembly is arranged in the normal-temperature air duct and comprises a first wind wheel, and the first wind wheel is used for driving airflow in the normal-temperature air duct to flow to the air mixing cavity; the second wind wheel assembly is arranged in the heat exchange air duct and comprises a second wind wheel used for driving airflow in the heat exchange air duct to flow to the air mixing cavity.
According to the air conditioner indoor unit provided by the invention, the air mixing cavity is arranged, so that the normal-temperature air in the normal-temperature air channel and the cold air in the heat exchange air channel are uniformly mixed and then blown out, and the air cooling heat blown out from the air outlet is uniform, so that the blown air is cool and not cool.
In some embodiments, the second wind wheel assembly is disposed below the first wind wheel assembly, the first wind wheel is an axial flow wind wheel or an diagonal flow wind wheel with a horizontal axis, and the second wind wheel is a centrifugal wind wheel with a horizontal axis.
In some embodiments, the first wind wheel assembly further comprises: the air outlet frame is provided with an air guide ring, the air guide ring is formed into a cylinder shape with an axis extending along the horizontal direction, and the first wind wheel is arranged at the inner side of the air guide ring; the first motor is connected with the first wind wheel and used for driving the first wind wheel to rotate.
In some embodiments, the air outlet frame is provided with a motor mounting seat, the motor mounting seat is connected with the air guide ring and is located at the inner side of the air guide ring, the motor mounting seat is in a cylinder shape with one end open and the other end closed in the horizontal direction, the first motor is accommodated in the motor mounting seat, and a driving shaft of the first motor penetrates through the closed end of the motor mounting seat and is connected with the first wind wheel.
In some embodiments, the motor mount is integrally formed with the air guide ring.
In some embodiments, the open end cap of the motor mount is provided with a motor platen.
In some embodiments, a wind collecting plate is arranged on the air outlet frame, and the wind collecting plate is connected with the air guide ring and matched with the air guide ring to define the air mixing cavity.
In some embodiments, the wind gathering plate comprises: a bottom plate portion connected to an inlet end of the air guide ring and extending outward in a radial direction of the air guide ring; the side plate part is connected with the bottom plate part and extends along the direction of the air outlet in the horizontal direction, the side plate part surrounds the outer side of the air guide ring, and a communication port communicated with the heat exchange air duct is formed at the lower end of the side plate part.
In some embodiments, the side plate portion has a length greater than a length of the air guide ring in a direction from the bottom plate portion toward the air outlet.
In some embodiments, the second wind wheel assembly further comprises: the volute is internally provided with a flow passage, an outlet of the flow passage is communicated with the air mixing cavity, and the second wind wheel is arranged in the volute; and a driving shaft of the second motor penetrates through the volute to be connected with the second wind wheel and used for driving the second wind wheel to rotate.
In some embodiments, the volute comprises: the rear side and the top of the volute body are both open; the drainage plate is covered on the rear side of the volute body, and a drainage channel which extends along the front-back direction and is communicated with the flow channel is formed on the drainage plate.
An air conditioner according to a second aspect of the present invention includes the air conditioner indoor unit according to the first aspect of the present invention.
According to the air conditioner disclosed by the invention, the blown air is mixed with natural air, so that the uniformity of cooling and heating is achieved, and the blown air is cool and not cool.
A control method of an air conditioner according to a second aspect of the present invention, the control method comprising:
when the difference value between the indoor real-time temperature and the set temperature value is larger than a first preset difference value, detecting the air outlet temperature of the air outlet, and if the air outlet temperature and the indoor real-time temperature are larger than a second preset difference value, stopping the first wind wheel and operating the second wind wheel; if the air outlet temperature and the indoor real-time temperature are not greater than a second preset difference value, the first wind wheel operates, and the second wind wheel operates.
According to the control method of the air conditioner, the starting and stopping of the first wind wheel and the second wind wheel can be controlled through the difference value of the air outlet temperature and the room temperature, so that the air conditioner can be used for rapidly refrigerating when the temperature difference value is large, cool and uncooled mixed air is supplied when the temperature difference value is small, and the air is disturbed to be cool and not smoky when the set temperature is reached.
In some embodiments, the first wind wheel operates and the second wind wheel stops when the real-time temperature in the room reaches a set temperature value.
A control method of an air conditioner according to a second aspect of the present invention, the control method comprising: detecting the body surface temperature of a human body, and starting the first wind wheel and reducing the rotating speed of the second wind wheel when the body surface temperature is lower than a preset value.
In some embodiments, the control method of the air conditioner further includes: and when the body surface temperature is lower than a preset value, reducing the frequency of the air conditioner compressor.
According to the control method of the air conditioner, the room can be kept at a certain temperature, the air blown onto the human body is not cooled, and the air flows, so that the room is cool and not choked.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic view of an indoor unit of an air conditioner according to an embodiment of the present invention;
fig. 2 is an exploded view of the indoor unit of the air conditioner shown in fig. 1;
FIG. 3 is a schematic view of the air frame shown in FIG. 2;
fig. 4 is a schematic view of another angle of the indoor unit of the air conditioner shown in fig. 1;
fig. 5 is an exploded view of the indoor unit of the air conditioner shown in fig. 4;
fig. 6 is a schematic view of the indoor unit of the air conditioner shown in fig. 1 at an angle;
fig. 7 is a cross-sectional view taken along line A-A of fig. 6.
Reference numerals:
the indoor unit 100 of the air conditioner,
a shell 1, an air inlet 101, an air outlet 102, a normal temperature air duct 103, a heat exchange air duct 104, a mixing air cavity 105,
the heat exchanger 2 is arranged such that,
the first wind wheel assembly 3, the first wind wheel 31, the wind outlet frame 32, the wind guide ring 321, the motor mount 322, the wind collecting plate 323, the bottom plate portion 3231, the side plate portion 3232, the communication port 3201, the first motor 33, the motor pressing plate 34,
the second wind wheel assembly 4, the second wind wheel 41, the volute 42, the flow channel 4201, the volute body 421, the drainage plate 422, the drainage channel 4221 and the second motor 43.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
An air conditioning indoor unit 100 according to an embodiment of the first aspect of the present invention is described below with reference to the accompanying drawings. The indoor unit 100 of the air conditioner of the present embodiment may be a cabinet.
As shown in fig. 1, an air conditioning indoor unit 100 according to an embodiment of the first aspect of the present invention includes: a housing 1, a heat exchanger 2, a first wind wheel assembly 3 and a second wind wheel assembly 4.
Specifically, referring to fig. 2, an air inlet 101 and an air outlet 102 are formed on a casing 1, a normal temperature air duct 103, a heat exchange air duct 104 and a mixing air cavity 105 are formed in the casing 1, an inlet of the normal temperature air duct 103 is connected with the air inlet 101, an outlet of the normal temperature air duct 103 is communicated with the mixing air cavity 105, an inlet of the heat exchange air duct 104 is connected with the air inlet 101, an outlet of the heat exchange air duct 104 is communicated with the mixing air cavity 105, the mixing air cavity 105 is communicated with the air outlet 102, and the heat exchanger 2 is arranged in the heat exchange air duct 104. The first wind wheel assembly 3 is arranged in the normal-temperature air duct 103, the first wind wheel assembly 3 comprises a first wind wheel 31, and the first wind wheel 31 is used for driving airflow in the normal-temperature air duct 103 to flow to the air mixing cavity 105; the second wind wheel assembly 4 is arranged in the heat exchange air duct 104, the second wind wheel assembly 4 comprises a second wind wheel 41, and the second wind wheel 41 is used for driving airflow in the heat exchange air duct 104 to flow to the air mixing cavity 105.
When the indoor unit 100 of the air conditioner works, under the driving of the first wind wheel 31, air can enter the air mixing cavity 105 from the air inlet 101 through the constant-temperature air channel 103, meanwhile, under the driving of the second wind wheel 41, air can enter the heat exchange air channel 104 from the air inlet 101, exchange heat with the refrigerant in the heat exchanger 2 in the heat exchange air channel 104 and then enter the air mixing cavity 105, at this time, normal-temperature air blown in from the normal-temperature air channel 103 and cold air blown in from the heat exchange air channel 104 are mixed in the air mixing cavity 105, and the mixed air is finally blown out from the air outlet 102. Thus, the normal temperature air and the cool air can be uniformly mixed, the air-cooled heat blown out from the air outlet 102 is uniform, and the blown air is cooled and not cooled.
It will be appreciated that, when the first rotor 31 or the second rotor 41 is operated alone, the air mixing chamber 105 only functions as an air flow passage.
According to the air conditioning indoor unit 100 of the embodiment of the invention, by arranging the air mixing cavity 105, the normal-temperature air in the normal-temperature air duct 103 and the cold air in the heat exchange air duct 104 can be uniformly mixed and then blown out, so that the air cooling heat blown out from the air outlet 102 is uniform, and the blown air is cool but not cool.
In one embodiment of the present invention, the first wind wheel assembly 3 and the second wind wheel assembly 4 are vertically spaced in the housing 1, specifically, as shown in fig. 2, the second wind wheel assembly 4 is disposed below the first wind wheel assembly 3, the first wind wheel 31 is an axial flow wind wheel or an diagonal flow wind wheel, and the axis of the first wind wheel 31 is horizontally disposed, for example, the axis of the first wind wheel 31 extends in the front-rear direction, at this time, the first wind wheel 31 may drive the airflow to flow in the front-rear direction (for example, from rear to front as shown in fig. 2).
Further, as shown in fig. 2, the second wind wheel 41 may be a centrifugal wind wheel, and the axis of the second wind wheel 41 is disposed horizontally, for example, the axis of the second wind wheel 41 extends in the front-rear direction, at which time the second wind wheel 41 is air-fed in its axial direction (for example, the back-to-front direction shown in fig. 2), and the air flow flows out in its radial direction (for example, the bottom-to-top direction shown in fig. 4). Therefore, the air flows in the normal-temperature air duct 103 and the heat exchange air duct 104 can be conveniently led into the air mixing cavity 105 for mixing.
For example, as shown in fig. 7, the air mixing chamber 105 may be disposed at the front side of the first wind wheel assembly 3, the second wind wheel assembly 4 is disposed below the first wind wheel assembly 3, the first wind wheel 31 may blow air into the air mixing chamber 105 in a back-to-front direction, the second wind wheel 41 may blow air into the air mixing chamber 105 in a bottom-to-top direction, and since the directions of the two air flows are substantially vertical, the air flows in the air mixing chamber 105 may be accelerated and agitated, so that the air mixing is more uniform.
In some embodiments, as shown in fig. 2, the first wind wheel assembly 3 may further comprise: the air outlet frame 32 and the first motor 33, the air outlet frame 32 is provided with an air guide ring 321, and the air guide ring 321 can guide the air flow in the normal-temperature air duct 103. Specifically, the wind-guiding ring 321 is formed in a cylindrical shape with an axis extending in the horizontal direction, for example, the wind-guiding ring 321 is formed in a cylindrical shape with an axis extending in the front-rear direction, and the first wind wheel 31 is provided inside the wind-guiding ring 321; a first motor 33 is connected to the first wind wheel 31 for driving the first wind wheel 31 to rotate.
In some examples, as shown in fig. 3, a motor mounting seat 322 is disposed on the air outlet frame 32, the motor mounting seat 322 is connected with the air guiding ring 321, the motor mounting seat 322 is located at the inner side of the air guiding ring 321, for example, a connecting rib is connected between the motor mounting seat 322 and the air guiding ring 321, the connecting rib extends inwards along the radial direction of the air guiding ring 321, the outer end of the connecting rib is connected with the air guiding ring 321, and the inner end of the connecting rib is connected with the motor mounting seat 322.
Further, as shown in fig. 3 and 5, the motor mount 322 has a cylindrical shape in which one end (e.g., a rear end of the motor mount 322 shown in fig. 2) is opened and the other end (e.g., a front end of the motor mount 322 shown in fig. 2) is closed in a horizontal direction, the first motor 33 is accommodated in the motor mount 322, and a drive shaft of the first motor 33 is connected to the first wind wheel 31 through the closed end (e.g., the front end of the motor mount 322 shown in fig. 2) of the motor mount 322. For example, a shaft hole is formed in the bottom wall of the closed end of the motor mount 322, and a driving shaft of the first motor 33 is coupled to the first motor 33 after passing through the shaft hole. Therefore, the first motor 33 can be conveniently installed, and the first motor 33 is conveniently connected with the first wind wheel 31.
Further, as shown in fig. 3, the motor mount 322 may be integrally formed with the air guide ring 321. Accordingly, the number of parts can be reduced, and the reliability of connection between the motor mount 322 and the air guide ring 321 can be improved.
In some examples, referring to fig. 2, the open end of the motor mount 322 (e.g., the rear end of the motor mount 322 shown in fig. 2) is capped with a motor platen 34, and the motor platen 34 may limit the motor mounted therein while effectively preventing impurities from entering the motor mount 322.
In some embodiments, as shown in fig. 2 and 3, a wind collecting plate 323 may be disposed on the air outlet frame 32, where the wind collecting plate 323 is connected with the air guiding ring 321 and cooperates with the air guiding ring 321 to define the air mixing cavity 105. Specifically, as shown in fig. 3, the wind collecting plate 323 may include: a bottom plate portion 3231 and a side plate portion 3232, wherein the bottom plate portion 3231 is connected to an inlet end of the air guide ring 321 (e.g., a rear end of the air guide ring 321 shown in fig. 3) and extends outward in a radial direction of the air guide ring 321; the side plate portion 3232 is connected to the bottom plate portion 3231 and extends in a horizontal direction toward the air outlet 102 (for example, a back-to-front direction shown in fig. 3), the side plate portion 3232 surrounds the outside of the air guide ring 321, a communication port 3201 communicating with the heat exchange duct 104 is formed at a lower end of the side plate portion 3232, and cool air in the heat exchange duct 104 can enter the air mixing chamber 105 through the communication port 3201 to be mixed with ambient temperature air.
For example, as shown in fig. 3, the air outlet frame 32 includes an air guide ring 321, a motor mount 322, and an air collecting plate 323, wherein the air guide ring 321 is cylindrical extending in the front-rear direction, the motor mount 322 is cylindrical with a closed front end and an open rear end, and the motor mount 322 is connected to the inner side of the air guide ring 321 by a connecting rib; the wind collecting plate 323 includes a bottom plate portion 3231 and a side plate portion 3232, wherein the bottom plate portion 3231 is connected to an outer peripheral surface of a rear end of the wind guiding ring 321, the bottom plate portion 3231 extends outward in a radial direction of the wind guiding ring 321, the bottom plate portion 3231 is in a square plate body shape extending in a vertical direction, the side plate portion 3232 is connected to the bottom plate portion 3231 and extends forward in a direction perpendicular to the bottom plate portion 3231, the side plate portion 3232 surrounds an outer side of the wind guiding ring 321, the side plate portion 3232 includes a horizontal plate, a first vertical plate and a second vertical plate, the horizontal plate extends horizontally and is located above the wind guiding ring 321, the first vertical plate and the second vertical plate are connected to left and right ends of the horizontal plate and extend downward, a lower end edge of the first vertical plate and a lower end edge of the second vertical plate each exceed a lowermost end edge of the wind guiding ring 321, and a communication port 3201 is defined between the lower end edges of the first vertical plate and the second vertical plate.
In some examples, as shown in fig. 3, the length of the side plate portion 3232 (the length of the side plate portion 3232 extending forward from the bottom plate portion) is greater than the length of the air guide ring 321 (the length of the air guide ring 321 extending forward from the bottom plate portion) in a direction from the bottom plate portion 3231 toward the air outlet 102 (e.g., a back-to-front direction shown in fig. 3). Therefore, the normal-temperature air flowing out of the air guide ring 321 can conveniently enter the air mixing cavity 105 between the air guide ring 321 and the air collecting plate 323, and the structure is more reasonable. In addition, the air deflector can be conveniently installed.
In some embodiments of the present invention, as shown in fig. 2 and 5, the second wind wheel assembly 4 may further include: the scroll casing 42 and the second motor 43, wherein a flow passage 4201 is formed in the scroll casing 42, and an outlet of the flow passage 4201 is communicated with the air mixing chamber 105, for example, an outlet of the flow passage 4201 is vertically opposite to a communication port 3201 of the air mixing chamber 105, so that air flow in the heat exchange air duct 104 can smoothly flow into the air mixing chamber 105. The second wind wheel 41 is arranged in the volute 42; the driving shaft of the second motor 43 is connected to the second wind wheel 41 through the volute 42 for driving the second wind wheel 41 to rotate.
In some examples, as shown in fig. 5, the volute 42 may include: the volute body 421 and the drainage plate 422, the rear side and the top of the volute body 421 are both open; the flow guiding plate 422 is in a shape of a plate body extending along the vertical direction, the flow guiding plate 422 is covered on the rear side of the volute body 421, and a flow guiding channel 4221 extending along the front-rear direction and communicating with the flow channel 4201 is formed on the flow guiding plate 422. The flow guide 4221 may serve to guide and guide the air entering from the air inlet 101, facilitating the flow of air into the flow channel 4201 of the volute 42. For example, as shown in fig. 7, the cross-sectional dimension of the inlet end of the flow-directing passage 4221 is gradually reduced in the back-to-front direction to provide a converging and guiding effect on the air flow.
An air conditioning indoor unit 100 according to an embodiment of the present invention will be described below with reference to the accompanying drawings, and the air conditioning indoor unit 100 is a cabinet.
Referring to fig. 2, the air conditioning indoor unit 100 includes: the evaporator (heat exchanger 2), the water pan 5, the motor pressing plate 34, the first motor 33, the axial flow air duct (air outlet frame 32), the axial flow wind wheel (first wind wheel 31), the wind deflector 6, the top cover 12, the panel 13, the volute 42, the second motor 43, the centrifugal wind wheel (second wind wheel 41), the drainage plate 422 and the base 14.
The base 14 is mounted on the case 11, and the evaporator is mounted on the case 11. The second motor 43, the centrifugal wind wheel, and the drainage plate 422 are installed on the scroll body 421, and the scroll 42 is installed on the casing 11. The second motor 43, the motor pressing plate 34, the axial flow wind wheel and the wind deflector 6 are arranged on the air outlet frame 32, the air outlet frame 32 is arranged on the box body 11, and the top cover 12 and the panel 13 are arranged on the box body 11 to form the air conditioner.
According to the air conditioner indoor unit 100 provided by the embodiment of the invention, the air conditioner indoor unit comprises the normal temperature air duct 103 and the heat exchange air duct 104, the air in the heat exchange air duct 104 flows into the air mixing cavity 105 through the evaporator, the air in the normal temperature air duct 103 directly enters the air mixing cavity 105 without passing through the evaporator, the two types of air in the air mixing cavity 105 are mixed, and finally the air is blown out from the air outlet 102, and the air blown out by the air conditioner is mixed with natural air, so that uniform cooling and heating are achieved, and the blown air is cool but not cool.
An air conditioner according to an embodiment of the second aspect of the present invention includes the air conditioner indoor unit 100 according to the above-described first aspect of the present invention.
Other constructions and operations of the air conditioner according to the embodiment of the present invention are known to those skilled in the art, and will not be described in detail herein.
According to the air conditioner provided by the embodiment of the invention, the blown air is mixed with natural air, so that the air conditioner is uniform in cooling and heating, and the blown air is cool but not cool.
According to a second aspect of the present invention, a control method of an air conditioner includes: when the difference between the indoor real-time temperature and the set temperature value is larger than a first preset difference, detecting the air outlet temperature of the air outlet 102, and if the air outlet temperature and the indoor real-time temperature are larger than a second preset difference, stopping the first wind wheel 31 and operating the second wind wheel 41; if the real-time temperature of the air outlet temperature and the indoor temperature is not greater than the second preset difference value, the first wind wheel 31 operates, and the second wind wheel 41 operates.
Further, when the real-time temperature in the room reaches the set temperature value, the first wind wheel 31 is operated and the second wind wheel 41 is stopped.
For example, in a specific example, the temperature detecting device is used to detect the temperature in the room, compare the difference between the real-time temperature of the room and the set temperature of the air conditioner, when the detected room temperature is greater than the set temperature, for example, greater than the first preset difference set by the air conditioner, then detect the air outlet temperature of the air outlet 102 of the air conditioner, compare the difference between the air outlet temperature and the room temperature, when the difference between the room temperature and the air outlet temperature is greater than the second preset difference, for example, the difference between the room temperature and the air outlet temperature is greater than 5 ℃, close the first wind wheel 31, only open the second wind wheel 41 to operate, so that the wind is cooler; when the difference between the room temperature and the outlet air temperature is small, for example, the difference between the outlet air temperature and the room temperature is lower than 5 ℃, the first wind wheel 31 is started, and at the moment, no more cold energy and no lower outlet air temperature are needed, so that cold air passing through the evaporator is mixed with air at normal temperature of the evaporator, and the air is cooled and not cooled.
When the room temperature reaches the set temperature, the lower second wind wheel 41 is closed, and only the first wind wheel 31 is opened to disturb the air, so that the air is cool and not choked.
According to the control method of the air conditioner, the starting and stopping of the first wind wheel 31 and the second wind wheel 41 can be controlled through the difference value of the air outlet temperature and the room temperature, so that the air conditioner can quickly refrigerate when the temperature difference value is large, cool and uncooled mixed air is supplied when the temperature difference value is small, and the air is disturbed to be cool and not smolder when the set temperature is reached.
It can be understood that the set temperature value refers to a target temperature value set after the user starts the air conditioner, and the first preset difference value and the second preset difference value may be preset difference values in the air conditioner, for example, the first preset difference value and the second preset difference value may be set before the air conditioner leaves the factory, and the first preset difference value and the second preset difference value may be the same or different.
Alternatively, the first preset difference may be not less than 5 ℃, for example, the first preset difference may be 5 ℃, 6 ℃, 7 ℃, 8 ℃, or the like. The second preset difference may also be not less than 5 ℃, for example, the second preset difference may be 5 ℃, 6 ℃, 7 ℃, 8 ℃, etc.
According to a second aspect of the present invention, a control method of an air conditioner includes: the body surface temperature of the human body is detected, and when the body surface temperature is lower than a preset value, the first wind wheel 31 is started, and the rotation speed of the second wind wheel 41 is reduced. And when the body surface temperature is lower than a preset value, reducing the frequency of the air conditioner compressor.
Specifically, by detecting the surface temperature of the human body only, when the surface temperature of the human body is detected intelligently to be lower than the set value, the first wind wheel 31 is opened, the windshield of the second wind wheel 41 is reduced, the frequency of the compressor is reduced, the temperature of the air outlet is increased, the room is kept at a certain temperature, the air blown onto the human body is not cooled, the air flows, and the air is cool and not choked.
According to the control method of the air conditioner, provided by the embodiment of the invention, the room can be kept at a certain temperature, the air blown onto the human body is not cooled, and the air flows, so that the air is cool and not choked.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (14)
1. An air conditioning indoor unit, comprising:
the air conditioner comprises a shell, wherein an air inlet and an air outlet are formed in the shell, a normal-temperature air channel, a heat exchange air channel and an air mixing cavity are formed in the shell, the air mixing cavity is connected with the air outlet, an inlet of the normal-temperature air channel is connected with the air inlet, an outlet of the normal-temperature air channel is communicated with the air mixing cavity, and an inlet of the heat exchange air channel is connected with the air inlet, and an outlet of the heat exchange air channel is communicated with the air mixing cavity;
the heat exchanger is arranged in the heat exchange air duct;
the first wind wheel assembly is arranged in the normal-temperature air duct and comprises a first wind wheel, and the first wind wheel is used for driving airflow in the normal-temperature air duct to flow to the air mixing cavity;
the second wind wheel assembly is arranged in the heat exchange air duct and comprises a second wind wheel, and the second wind wheel is used for driving airflow in the heat exchange air duct to flow to the air mixing cavity;
the first wind wheel assembly further comprises:
the air outlet frame is provided with an air guide ring, the air guide ring is formed into a cylinder shape with an axis extending along the horizontal direction, and the first wind wheel is arranged at the inner side of the air guide ring;
the air outlet frame is provided with an air collecting plate, and the air collecting plate is connected with the air guide ring and matched with the air guide ring to define the air mixing cavity;
the air in the heat exchange air duct flows into the air mixing cavity through the heat exchanger, the air in the normal-temperature air duct directly enters the air mixing cavity without passing through the heat exchanger, and the two types of air in the air mixing cavity are mixed and finally blown out from the air outlet;
the air collecting plate comprises a bottom plate part and a side plate part, wherein the bottom plate part is connected to the outer peripheral surface of the rear end of the air guide ring, the bottom plate part extends outwards in the radial direction of the air guide ring, the bottom plate part is in a plate body shape extending in the vertical direction, the side plate part is connected with the bottom plate part and extends forwards in the direction perpendicular to the bottom plate part, the side plate part surrounds the outer side of the air guide ring, the side plate part comprises a horizontal plate, a first vertical plate and a second vertical plate, the horizontal plate horizontally extends and is located above the air guide ring, the first vertical plate and the second vertical plate are respectively connected to the left end and the right end of the horizontal plate and extend downwards, the lower end edge of the first vertical plate and the lower end edge of the second vertical plate exceed the bottommost end of the air guide ring, and a communication port communicated with the heat exchange air duct is defined between the lower end edge of the first vertical plate and the lower end edge of the second vertical plate.
2. The indoor unit of claim 1, wherein the second wind wheel assembly is disposed below the first wind wheel assembly, the first wind wheel is an axial flow wind wheel or an diagonal flow wind wheel with a horizontal axis, and the second wind wheel is a centrifugal wind wheel with a horizontal axis.
3. The air conditioning indoor unit of claim 1, wherein the first wind wheel assembly further comprises:
the first motor is connected with the first wind wheel and used for driving the first wind wheel to rotate.
4. The indoor unit of claim 3, wherein the air outlet frame is provided with a motor mounting seat, the motor mounting seat is connected with the air guide ring and is located at the inner side of the air guide ring, the motor mounting seat is in a cylinder shape with one end open and the other end closed in the horizontal direction, the first motor is accommodated in the motor mounting seat, and a driving shaft of the first motor penetrates through the closed end of the motor mounting seat to be connected with the first wind wheel.
5. The indoor unit of claim 4, wherein the motor mount is integrally formed with the air guide ring.
6. The indoor unit of claim 4, wherein the open end cap of the motor mount is provided with a motor platen.
7. The indoor unit of claim 1, wherein the side plate portion has a length greater than a length of the air guide ring in a direction from the bottom plate portion toward the air outlet.
8. An air conditioning indoor unit according to any of claims 1-7, wherein the second wind wheel assembly further comprises:
the volute is internally provided with a flow passage, an outlet of the flow passage is communicated with the air mixing cavity, and the second wind wheel is arranged in the volute;
and a driving shaft of the second motor penetrates through the volute to be connected with the second wind wheel and used for driving the second wind wheel to rotate.
9. The indoor unit of claim 8, wherein the volute comprises:
the rear side and the top of the volute body are both open;
the drainage plate is covered on the rear side of the volute body, and a drainage channel which extends along the front-back direction and is communicated with the flow channel is formed on the drainage plate.
10. An air conditioner comprising the air conditioner indoor unit according to any one of claims 1 to 9.
11. A control method of an air conditioner according to claim 10, characterized in that the air conditioner comprises:
when the difference between the indoor real-time temperature and the set temperature value is larger than the first preset difference, detecting the air outlet temperature of the air outlet,
if the real-time temperature of the air outlet temperature and the indoor temperature is greater than a second preset difference value, the first wind wheel stops, and the second wind wheel operates;
if the air outlet temperature and the indoor real-time temperature are not greater than a second preset difference value, the first wind wheel operates, and the second wind wheel operates.
12. The control method of an air conditioner of claim 11, wherein the first wind wheel is operated and the second wind wheel is stopped when the real-time temperature in the room reaches the set temperature value.
13. A control method of an air conditioner according to claim 10, characterized in that the air conditioner comprises:
detecting the body surface temperature of a human body, and starting the first wind wheel and reducing the rotating speed of the second wind wheel when the body surface temperature is lower than a preset value.
14. The control method of an air conditioner according to claim 13, further comprising: and when the body surface temperature is lower than a preset value, reducing the frequency of the air conditioner compressor.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020258716A1 (en) * | 2019-06-26 | 2020-12-30 | 广东美的制冷设备有限公司 | Air conditioner indoor unit |
| CN110715424B (en) * | 2019-10-21 | 2022-04-26 | 广东美的制冷设备有限公司 | Air conditioner and control method, device and equipment thereof |
| KR102678678B1 (en) * | 2019-10-30 | 2024-06-25 | 지디 미디어 에어콘디셔닝 이큅먼트 씨오 엘티디 | air conditioner |
| WO2021082317A1 (en) * | 2019-10-30 | 2021-05-06 | 广东美的制冷设备有限公司 | Air duct part and air conditioner having same |
| CN110822659B (en) * | 2019-11-18 | 2021-10-26 | 广东美的制冷设备有限公司 | Air conditioner and control method and device thereof |
| CN111622972A (en) * | 2020-06-28 | 2020-09-04 | 珠海格力电器股份有限公司 | Air outlet device and tower fan |
| CN114659173B (en) * | 2022-04-29 | 2023-06-09 | 海信空调有限公司 | Air conditioner and control method of operation parameters of air conditioner |
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